Ratings information obtained by MMAjunkie.com (www.mmajunkie.com) shows a peak audience of 294,000 for the May 21 headliner.

Overall, the show, which took place at the Rose Garden in Portland, Ore., averaged 249,000 viewers.

In addition to the night’s main event, Strikeforce Challengers 8 featured some of the organization’s top prospects. Tyron Woodley, Nathan Coy, Roger Bowling, Bobby Voelker, Tarec Saffiedine and Pat Healy were all featured in televised main-card bouts.

Strikeforce Challengers 7 in March averaged 316,000 viewers but benefited from the premium cable station’s “free preview” weekend that nearly quadrupled the number of available households.

In fact, Strikeforce Challengers 8 ratings were down only 19 percent compared to the May 15 “Strikeforce St. Louis: Heavy Artillery” event, a heavily hyped show that featured some of the organization’s biggest names, including champ Alistair Overeem, Brett Rogers, Antonio Silva, Andrei Arlovski, Ronaldo “Jacare” Souza and Roger Gracie. That show averaged 308,000 viewers and peaked with 448,000.

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